For the following questions answer them individually
The marked price of a pen is 25% more than its cost price. The pen is sold for ₹220 after a discount of ₹30. What is the profit percentage?
The monthly income of a person is ₹15,000. He saves 20% of his income. If his income increases by 10% and his nominal savings remain the same, then what will be his new expenditure?
The curved surface area of a cylinder, whose height is 10 cm, is 1320 $$cm^2$$. What is the volume of this cylinder? [Use $$\pi = \frac{22}{7}$$]
The average age of 5 children is 10 years. If two more children of ages 11 years and 16 years join, then what will be the new average age?
If K1 and K2 are two distinct prime numbers, then what is the product of the highest common factor and the least common multiple of K1 and K2?
On a tree, there are some parrots and some pigeons in the ratio of 7 : 9, respectively. After an hour, 8 parrots fly away, and 6 pigeons and 10 sparrows come and sit on the tree. The ratio of the parrots and the pigeons on the tree now is 1 : 4. What is the ratio of the parrots and the sparrows that are now on the tree?
The following pie-chart shows the distribution of the monthly income of a man. The monthly income of the man is ₹84,000.
How much does he spend on children's fees in a year?
A boat takes a total of 2 hours to cover 9 km downstream and return, given that the speed of the stream is 6 km/h. What is the speed of the boat in still water?
If the area of a parallelogram is 508 $$m^{2}$$ and its base is 40 m, then what is the corresponding height of the parallelogram?
Mr. Stark gave 30% of the money he had to Bruce. He also gave 30% of the remaining amount to each of Natasha, Captain and Vision. Half of the remaining amount he spent on miscellaneous items, and the remaining amount of ₹14,000 he deposited in Marvel's Fund. How much money did Mr. Stark initially have?